The gunfire outside the mechanical pyramid had only just died down when everyone preparing to rest heard a deep rumble.
It came from inside the entire pyramid.
The metal framework maintaining the city's shape began to shift. Gears locked into place, steam burst from the seams, and the buildings at the top retracted to either side as the pyramid's tip stretched higher.
Before long, the tower-like spire had transformed into a colossal cannon barrel.
Its muzzle pointed toward the distance.
At the base of the mechanical pyramid, an enormous launch mechanism unfolded from the outer shell. Energy conduits connected one after another, and all remaining resources were fed into the city's core. Red energy flowed through the pipelines and gathered at the cannon's muzzle.
The pressure in the air continued to rise.
Once it accumulated enough energy, the ultimate weapon would unleash an attack capable of destroying a vast area.
